An arachnoleptic fit is the little dance you do when you walk through a spider web as you try to get it off of you. Often used as a verb or a noun. Can also be used to express distress in seeing a spider.

Darn, I'm just might have an arachnoleptic fit if I see that spider one more time.

Person 1:Is there something wrong with them?
Person 2:Nah, they're just having an arachnoleptic fit.

Arachnoleptic Fit (n.): The frantic dance performed just after you've accidentally walked through a spider web.

Little Miss Muffet sat on her tuffet, eating her curds and wey. Along came a spider who sat down besi.. ARGH FUCK IT'S A FUCKING GREAT BIG FUCKING FUZZBEAST. DIEEEEEEE DIEEEEEEEEEEEEEEEEE ~spasm~EEEEEE~stabs air blindly~EEEEEEE!@

A phobia on an elevated level. Looking at a spider may trigger an unconscious reaction upon which the victm begins to convulse, urinate and vomit profusely. Also, what happens when Barbra Streisand looks at brown rabbits with white ears.